Rear Left Suspension Assembly - 1991 300ZX Z32

The Nissan 300ZX Z32 platform utilizes a sophisticated multi-link rear suspension where the aluminum knuckle assembly 43018-40P00 serves as the central node connecting the upper link, lower link, traction rod, and toe control link. When sourcing this component from junkyards, prioritize 1990-1996 2-seater models, as the 2+2 four-seater variants utilize a different geometry with a longer wheelbase and incompatible mounting points. Inspect the casting around the 12mm and 14mm control arm bolt holes for stress cracks, and verify the ABS sensor mounting ear is intact—early 1990-1991 knuckles may have unthreaded clearance holes requiring nutserts versus the threaded M8 bosses found on 1992-1996 units. During installation, torque the four control arm bolts to 54-68 ft-lbs and ensure the hub nut (27mm socket) is torqued to 174-231 ft-lbs with the vehicle weight on the suspension to prevent bearing preload issues. Common failures include corrosion seizure of the hub bearing (pressed into the knuckle) and impact damage from curbing.